Take a 10-minute guided tour of FRED, the St. Louis Fed's free …

This video introduces the transformations we'll be using in the rest of …

How do we keep track of how many robots we've made?

Before building characters you need to define individual shapes using objects.

Now we attach our particle to a spring.

First let's think about how to rotate some really simple points such …

First we'll use the slope intercept form of a line to define …

First let's look at ray tracing in 2D using a simple example.

First you'll connect shapes together using joints that rotate.

First we need to make sure we understand exactly what happens in …

Let's start by drawing every frame, one by one...

Find out how we can make curved lines using straight ones using …

What happens if the director changes their mind and asks for two …

First we'll review weighted averages of two points and extend the idea …

How can we calculate a weighted average between two points? (pssst. This …

Introduction to the basics of ray tracing.

Now we add a horizontal component to our system.

Next lets build a diagram that break rotation into smaller parts. The …

Let's look more closely at how light behaves when it strikes an …

Connecting key poses with straight lines is called linear interpolation.